Home / 1,351.20-1,874.24-1,253.92

Finding the Fourth Proportional to 1,351.20, 1,874.24 and 1,253.92

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Solution

The fourth proportional to 1,351.20, 1,874.24 and 1,253.92 is: 1,739.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.20 : 1,874.24 = 1,253.92 : x
  2. Step 2: Convert to fraction form
    1,351.20/1,874.24 = 1,253.92/x
  3. Step 3: Cross multiply
    1,351.20x = 1,874.24 × 1,253.92
  4. Step 4: Simplify right side
    1,351.20x = 2,350,147.02
  5. Step 5: Solve for x
    x = 2,350,147.02/1,351.20
  6. Step 6: Final answer
    x = 1,739.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.